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Diamond Trivia Quiz

1. A diamond is what in its most pure form?

  • Carbon
  • Calcium
  • Potassium
  • Sodium

A diamond is made of just one element: carbon.

2. Which of the following is NOT one of the Four C's?

  • Cut
  • Color
  • Carrot
  • Clarity

A carrot is a vegetable, whereas carat is a unit of measurement that refers to the weight of a gemstone.

3. The Cullinan, the largest gem-quality diamond ever mined, weighed how many carats?

  • 706 carats
  • 1,506 carats
  • 3,106 carats
  • 2,106 carats

The Cullinan was 3,106.75 carats (rough weight) when it was found in 1905.

4. Where can one view the Cullinan Diamond?

  • The Smithsonian
  • The Tower of London
  • The Louvre
  • The British Museum

Both Cullinan I and Cullinan II are part of the Crown Jewels of the United Kingdom, which are kept at the Tower of London.

5. A diamond measures what on the Mohs scale of mineral hardness?

  • 8
  • 7
  • 10
  • 9

A diamonds is the hardest material on earth, and therefore scores a 10 on the Mohs scale.

6. A diamond can chip and/or break?

  • True
  • False

It's true, a diamond can chip or break when hit just right. Learn more.

7. Can some diamonds actually glow in the dark?

  • Yes
  • No

Some diamonds are fluorescent, which means they will glow under ultraviolet light. A rare property in diamonds is phosphorescence, which enables the diamond to continue glowing for a short time after the UV light has been turned off.

8. According to a 2011 survey by, what is the average price for an engagement ring?

  • $3,500
  • $5,200
  • $2,000
  • $9,500

The average American engagement ring costs $5,200, according to a 2011 survey that polled more than 10,000 U.S. brides and 1,000 U.S. grooms who were either recently engaged or married.

9. Which is the following is NOT a typical diamond shape?

  • Round
  • Oval
  • Cube
  • Radiant

While round, oval and radiant are all traditional diamond cuts, cube is not.

10. Diamond is the birthstone for what month?

  • December
  • March
  • April
  • January

Diamond is the official birthstone for April. While traditionally celebrated with white diamonds, black diamonds, yellow diamonds, and pink diamonds make great alternatives.


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